package kr.test.t;

public class CalculatorDemo {
/*	public static void main(String args[]){
		System.out.println(10+20);
		System.out.println(20+40);
	}*/
	public static void sum(int a, int b){
		System.out.println(a+b);
	}
	public static void main(String[] args) {
		
		sum(10,20);
		sum(20,30);
	}
	
}
